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| 若有安裝色情守門員,可用無界、自由門等軟件瀏覽伊莉。或使用以下網址瀏覽伊莉: http://www.eyny.com:81/index.php When the traffic light turns green, a car accelerates from rest at a rate of 2.0ms-2. At the same time, a truck, moving at a constant speed of 10ms-2, passes the traffic light, which just turns green, and overtakes the car. Since the car moves with increasing speed, it will overtake the truck some times later.
(a) At what distance from the traffic light will the car overtake the truck?
(b) What is the speed of the car at that instant? |
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